Click on thumbnails for a larger image. Please be patient since some of these pages of thumbnail images take some time to load. These mineral photos are copyrighted by their owners and may not be used without permission.
Henmilite: Ca2Cu[B(OH)4]2(OH)4 Olshanskyite: Ca2[B3O3(OH)6]OH·3(H2O)
Comments: Milky white olshanskyite hosting crystals of deep blue henmilite to 6 mm across. Location: Fuka Mine, Bicchu Town, Kawakama Co., Okayama Pref., Japan. Scale: Crystal size 6 mm. © John Veevaert
Henmilite: Ca2Cu[B(OH)4]2(OH)4
Comments: Blue crystals of henmilite in matrix. Location: Fuka Mine, Bitchu-Cho, Okayama Prefecture, Chugoku Region, Honshu Island, Japan. Scale: Crystal size 3 mm. © John Veevaert